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Document contents disappear after clicking "cancel" button on modal

I am building a project using HTML, bootstrap CSS and Jquery. This is my HTML code:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <link rel="stylesheet" href="node_modules/bootstrap/dist/css/bootstrap.min.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
    <link rel="stylesheet" href="node_modules/bootstrap-social/bootstrap-social.css">
    <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Exo&display=swap">
    <link rel="stylesheet" href="styles.css">

    <title>TimeGuard</title>
</head>

<body>
    <div id="myModal" class="modal fade" role="dialog">
        <div class="modal-dialog modal-dialog-centered">
            <div class="modal-content">
                <div class="modal-body">
                    <form>
                        <div class="form-group row">
                            <label for="name" class="col-form-label">NAME: <input id="targetname" type="text"
                                    placeholder="Enter name of target website" style="width:350px"></label>
                            <label for="url" class="col-form-label">URL: <input id="targeturl" type="text"
                                    placeholder="Enter URL of target website"
                                    style="width:350px;margin-left:15px;"></label>
                            <div class="alert alert-info" role="alert">
                                Both the input fields are mandatory
                            </div>
                            <div>
                                <button type="submit" class="btn btn-light" id="close">Cancel</button>
                                <button type="submit" class="btn btn-dark" id="submit"
                                    disabled="disabled">Submit</button>
                            </div>

                        </div>
                    </form>
                </div>
            </div>

        </div>

    </div>

    <div class="main">
        <div>
            <nav class="navbar">
                <ul class="nav nav-tabs nav-justified" id="firstul">
                    <li class="nav-item active" style="width:200px"><a class="nav-link" href="#dashboard">DASHBOARD</a>
                    </li>
                    <li class="nav-item inactive" style="width:200px;"><a class="nav-link" href="#reports">REPORTS</a>
                    </li>
                    <li class="nav-item inactive" style="width:500px;"><a class="nav-link" href="#addict">ADDICT
                            SETTINGS</a></li>
                </ul>
            </nav>
        </div>

        <div class="tab-content" style="padding:20px;">
            <div class="tab-pane fade active show" role="tab-panel" id="dashboard">
                <div>
                    <h1>OVERVIEW</h1>
                    <div class="container-fluid box">
                        <div class="row justify-content-around">
                            <div class="overview col-3">
                                <div style="font-size:79px;">
                                    00:00:00
                                </div>
                            </div>
                            <div class="overview col-3">
                                <div style="font-size:79px;">
                                    00:00:00
                                </div>
                            </div>
                        </div>
                        <div class="row justify-content-around">
                            <div class="col-3">

                            </div>
                            <div class="col-3">

                            </div>
                        </div>
                    </div>
                </div>
                <div>
                    <h1>TARGET WEBSITES</h1>
                    <div class="box container-fluid">
                        <div class="row justify-content-center">
                            <div id="tarwebs" class="col-6">
                                
                            </div>
                            <div class="row">
                                <i id="addbtn" class="fa fa-plus-circle" type="button"
                                    style="font-size:50px;margin-left:650px;margin-top:20px;"></i>
                            </div>
                        </div>
                    </div>
                </div>

                <div class="tab-pane fade" role="tab-panel" id="reports">
                    <h1>DAILY</h1>
                    <div class="box container-fluid">
                        <div class="row justify-content-around">

                        </div>
                    </div>
                    <h1>WEEKLY</h1>
                    <div class="box container-fluid">
                        <div class="row justify-content-around">
                            <canvas id="myChart" style="width:100%;max-width:600px"></canvas>
                        </div>
                    </div>
                    <h1>MONTHLY</h1>
                    <div class="box container-fluid">
                        <div class="row justify-content-around">

                        </div>
                    </div>
                </div>

            </div>
        </div>


        <script src="node_modules/jquery/dist/jquery.slim.min.js"></script>
        <script src="node_modules/popper.js/dist/umd/popper.min.js"></script>
        <script src="node_modules/bootstrap/dist/js/bootstrap.min.js"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.4/Chart.js"></script>
        <script src="dashboard.js"></script>
</body>

</html>

This is CSS code:

body{
    font-family: 'Exo', sans-serif;
}

.main{
    background-color:rgb(4, 209, 4);
    margin:30px;    
    border-radius:10px;
    padding-top: 0px;
    padding-bottom:20px;
}

.navbar{
    background-color:white;
    padding-left:0px;
    padding-right:0px;
    margin-left:auto;
    margin-right:auto;
    padding:0px;
}

.nav-link{
    color:black;
}

li{
    font-size:25px;
    text-align:center;
}

li.active{
    background-color: rgb(4, 209, 4);
    color:black;
    border:5px double;
    border-bottom:none;
}

li.inactive{
    background-color: green;
    
}

.box{
    border:1px solid rgb(92, 86, 86);
    border-radius:10px;
    padding:20px;
}

.overview{
    background-color: white;
    padding:5px;
    justify-content:center;
    border-radius:50px;
    text-align:center;
}

#tarwebs{
    background-color: rgb(128, 183, 231);
    padding:10px;
    justify-content:center;
    border-radius:50px;
}

.targets{
    background-color: white;
    height: 40px;
    border-radius:25px;
    padding:8px 30px 8px 15px;

}

.target-input{
    background-color: antiquewhite;
    border-radius:2px;
}

.fa-star:hover{
    color:rgb(241, 241, 214);
}

.select{
    color:yellow;
}

.deselect{
    color:black;
}

This is the Javascript(Jquery) code:

$(document).ready(function () {
    $("#firstul li").on("click", function () {
        $("#firstul li").removeClass("active").addClass("inactive");
        $(this).removeClass("inactive").addClass("active");
        $(".tab-pane").removeClass("active show").addClass("d-none");
        let value = this.children[0].getAttribute("href");
        $(value).addClass("active show").removeClass("d-none");
    });
    $("#addbtn").on("click", function () {
        $("#myModal").modal("show");
    });
    $("#close").on("click", function () {
        $("#myModal").modal("hide");
    });

    $("#targeturl").on("input change", function () {
        if ($("this").val() == "")
            $("#submit").prop("disabled", true);
        else
            $("#submit").prop("disabled", false);
    });


    $(".fa-star").on("click", function () {
        $(this).toggleClass("select deselect");
    });

    $("#submit").on("click", function (e) {
        e.preventDefault();
        $("#myModal").modal("hide");
        let url = $("#targeturl").val();
        let name = $("#targetname").val();
        let domain = new URL(url);
        domain = domain.hostname;
        if (name == "") {
            name = domain;
        }
        let text = `<div class="targets" style="margin-down:10px;"><img src="https://s2.googleusercontent.com/s2/favicons?domain_url=${domain}"><b style="margin-left:10px;">${name}</b><i class="fa fa-trash" style="font-size:25px;float:right;" type="button"></i><i class="fa fa-star select" style="font-size:25px;float:right;margin-right: 10px;" type="button"></i></div>`;

        document.getElementById("tarwebs").innerHTML+=text;

    })

});

My issues are:

  1. After entering the form specified in the modal and submitting it, the document is changed as expected (A div element appears as expected) . But after opening the modal again (By clicking the plus icon below), if I click "cancel" button without entering any detail , the page reloads and all the previous div elements in the document disappear. I want that the user should retain the previous div element as well as add another div element by filling the modal again.

  2. After re-opening the modal second time, the previous inputs are retained. I have to first delete those inputs before filling another.

I would be glad if someone could solve these issues.

Via Active questions tagged javascript - Stack Overflow https://ift.tt/2FdjaAW
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